After years of dating losers, cheats and one guy who did something unrepeatable to her kettle, Ruby has all but given up on romance. But then a stranger sits next to her on a train to London and explains his plan to propose to the woman of his dreams. Maybe true love does exist after all?
When the man accidentally leaves the engagement ring behind, Ruby is determined to save the day. But she hasn't counted on fellow passenger Curtis stepping in and insisting he should be the one to track the stranger down.
As summer closes in, the unlikely pair make a promise to reunite the ring with its owner. But can they find their own happy ever after along the way?